Jute/Polyester Composites - Natural Polymers, Biopolymers, Biomaterials, and Their Composites, Blends, and IPNs - page 122

Water absorption
The test specimens (25 mm x 25 mm) were cut from the laminates and tested for water
absorption as per ASTM-D570.

disCussioN aNd results
Tensile properties of various jute/polyester composites are given in Table 1.

table 1.

S. No. Composite type Tensile strength, MPa Tensile modulus, GPa

1 HSUNTR 48.5 9.6

2 HSAL 35.4 _

3 HSALMC 50.3 5.5

4 HUNTR 33.6 _

5 HAL 11.3 _

6 HSTHER 51.2 10.2

7 Polyester 15.2 2.1

As observed from Table 1, both tensile strength and tensile modulus are maximum
for HSTHER.
Flexural properties of various jute/polyester composites are given in Table 2.

table 2.
S. No. Composite type Flexural strength, MPa Flexural modulus, GPa

1. HSUNTR 54.2 3.1

2. HSALMC 55.3 2.8

3. HSTHER 68.2 4.4

4. POLYESTER 30.6 1.3

As observed from Table 2, flexural properties (both strength and modulus) are
maximum for HSTHER.
ILSS and izod impact strength of various jute/polyester composites is given in
Table 3.

table 3.

S. No. Composite type ILSS, MPa Izod impact strength, J/m

1. HSUNTR 4.5 103.2

2. HSALMC 6.2 123.3

3. HSTHER 5.3 85.6

4. POLYESTER _ 88.4